I suffer from these and find it hard to keep appointments for various things as I usually chicken out at the last minute and cancel.
Anyway...
Last week I saw an advert for the outside clinic on the tv - they come to your house and do eyetests, the ad and their website shows lots of old ladies so I felt a bit silly ringing them but they were great, they said it would be 6 weeks but the letter arrived a couple of days later and the optometrist came today, he was very thorough and lovely!
I thought I'd let you know how good they were incase there is anyone else in the same situation. It didn't cost me anything apart from my new frames (including a £50 reduction due to tax credits)
I will soon be able to see again!